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  • 1
    Electronic Resource
    Electronic Resource
    New hydroxyisoflavans as contact sensitizers in cocus wood Brya ebenus DC (Fabaceae) (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 25 (1991), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 15-year-old girl developed perioral dermatitis and swelling of the lips, having played a flute made of cocus wood for 2 years. Patch tests with wood shavings, as well as with subsequently isolated constituents named focus 1 and focus II. were Strongly positive. Alter complete purification, boltContact allergens were identified as isoflavan derivatives, While Cocus 1 was shown to be 7,8-dihydroxy-2,4,5trmethoxyisoflava, the structure of focus II could not be elucidated exactly. It could have been Either 7,8,3′-trihydroxy 2,4 dimethoxyisoflavan or 7,8,2-trihydroxy-3′,4-dime-thoxyoflavan The exact position of the hydroxy and methoxy group in C-2 and C-3 can be determined only by complete synthesis Of both compounds or by isolation of greater amounts of focus II for further oxidation experiments. Due t0 the stronger patch lest reaction and the higher yield cocus I in the wood, this hydroxyisoflavan must be recognized as the main contact allergen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1991.tb01820.x
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  • 2
    Electronic Resource
    Electronic Resource
    Contact allergy to Australian blackwood (Acacia melanoxylon R.Br.): isolation and identification of new hydroxyflavan sensitizers (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 23 (1990), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Australian blackwood is known to be an important cause of allergic contact dermatitis in Australia. Previous investigations have shown that 2,6-dimethoxy-1,4-benzoquinone and acamelin are 2 of the responsible, but weak, sensitizers. When these 2 quinones are lacking. which is occasionally found, the wood still possesses allergenic property The present re-examination led to the: isolation and identification of 4 hydroxyflavans, of which 3 proved to he allergens. Melacacidin, known to be the main constituent of these flavan derivatives in the heartwoud, was isolated and its sensitizing capacity in guinea pigs determined. It showed a moderate sensitizing power. Melacacidin occurs abundantly in 125 Australian and 3 African Aeacia species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1990.tb00080.x
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  • 3
    Electronic Resource
    Electronic Resource
    Allergic and irritant contact dermatitis from falcarinol and didehydrofalcarinol in common ivy (Hedera helix L.) (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 17 (1987), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Experimental and chemical investigations revealed that common ivy (Hedera helix susp. Helix) contains 3 compounds which are powerful irritants and moderate sensitizers. Only 2 of these constituents, falcarinol and didehydrofalcarinol, are present in the plant during the whole year. Besides Panax ginseng and Schefflera arboricala, this is the third species of the Araliaceae in which these polyacetylenic sensitizers have been found. Falcarinol and didehydrofalcarinol also occur in Hedera helix subsp. canariensis. 4 patients have been patch tested. Even in low concentrations (0.03%). the main allergen falcarinol elicited strong reactions in all of them. One of the authors became sensitized during the investigations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1987.tb02634.x
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  • 4
    Electronic Resource
    Electronic Resource
    The synthesis of caffeic acid esters, a new group of naturally occurring contact allergens (1989)
    Springer
    Naturwissenschaften 76 (1989), S. 426-427 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00366169
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  • 5
    Electronic Resource
    Electronic Resource
    Vergleichende tierexperimentelle Untersuchungen über zwei Methoden zur Bestimmung der Histokompatibilität (1966)
    Springer
    Langenbeck's archives of surgery 315 (1966), S. 282-290 
    Details
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung In den vorliegenden tierexperimentellen Untersuchungen an Meerschweinchen wurden die Ergebnisse des Normal lymphocyte transfer-Testes nachBrent undMedawar sowie des Third party-Testes nachWilson, Henry undMerrill auf ihre Zuverlässigkeit bei der Bestimmung der Histokompatibilität von Spender und Empfänger überprüft. beide Teste sind nach den vorliegenden tierexperimentellen Ergebnissen eine Hilfe, aus einem Kollektiv möglicher Spender den für einen bestimmten Empfänger geeignetsten herauszufinden. Als Methode der Spenderwahlerwiessich der Normal lymphocyte transfer-Test dem Third man-Test als überlegen. Die immunologischen Grundlagen dieser beiden in vivo Methoden und die Einschränkungen, die für die Beurteilung ihrer Ergebnisse daraus resultieren, werden diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01439599
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  • 6
    Electronic Resource
    Electronic Resource
    Über saure Oxalate der Erdalkalimetalle. (I.) (1916)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 95 (1916), S. 194-224 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19160950114
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  • 7
    Electronic Resource
    Electronic Resource
    Untersuchungen über die Löslichkeiten von Salzen und Gasen in Wasser und wäßrigen Lösungen bei Temperaturen oberhalb 100°C (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 337 (1965), S. 68-79 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The solubilities of the sulphates of the bivalent metals Fe, Cu, Co, Ni and Zn in water at T 〉 100 °C have been determined.The solubility curves are discussed. Also the solubilities of O2 and H2 in aqueous solutions of various electrolytes (see „Inhaltsübersicht“) have been measured at higher temperatures. Relative to the solubilities in pure water, a decrease in the gas solubility occurs.
    Notes: Die Löslichkeit der zweiwertigen Sulfate von Eisen, Kupfer, Kobalt, Nickel und Zink in Wasser wurde in Abhängigkeit von der Temperatur bestimmt. Die erhaltenen Löslichkeitskurven werden diskutiert.Im zweiten Teil der Arbeit wird über Messungen der Löslichkeit von Sauerstoff und Wasserstoff in wäßrigen Lösungen von H2SO4, NaOH, KOH, NH4OH, (NH4)2SO4, CuSO4, CoSO4 und NiSO4 bei erhöhten Temperaturen berichtet. Die geannten Stoffe bewirken eine Minderung Gaslöslichkeit gegenüber der Löslichkeit in reinem Wasser.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653370111
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  • 8
    Electronic Resource
    Electronic Resource
    Erhaltungssätze und schwache lösungen in der gasdynamik (1985)
    Chichester, West Sussex : Wiley-Blackwell
    Mathematical Methods in the Applied Sciences 7 (1985), S. 470-479 
    Details
    ISSN: 0170-4214
    Keywords: Mathematics and Statistics ; Applied Mathematics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics
    Notes: The fundamental laws of Gasdynamics can be formulated very naturally as conservation laws in the form of integral relations. This formulation includes not only continuously differentiable processes but also the very important discontinuous shocks. On the other side one has the tool of weak solutions of the differential equations of Gasdynamics due to P. D. Lax and several other authors. While the conservation laws of integral type are determined by Physics in an unique way the differential equations of Gasdynamics, even if written in divergence form, are not. Hence the question arises which form of the differential equations in the weak sense is the “correct” interpretation of the physical conservation laws. This paper tries to give an answer by investigating the connections between the two formulations. At first the integral equations of Gasdynamics are written in space-time divergence form. Thus, independently from Gasdynamics, one has Haar's lemma stating that for each weak solution of a partial differential equation (in divergence form) a corresponding integral equation of conservation law type is valid for almost every family member, the family consisting of some simple domains like spheres or squares. Moreover the converse of Haar's lemma is also true. In this paper Haar's lemma is extended to a more general class of domains. This yields that both formulations of conservation laws are essentially equivalent. Additionally a divergence definition due to C. Müller is considered. As is shown by a simple example C. Müller's divergence concept leads to a more general class of solutions, not all of them being solutions of the corresponding conservation laws.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mma.1670070133
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